Rimobul 4.5" Giant Water Balloons Water Bombs - 500 pack These are the perfect size and hold up very well, until they hit their intended target! Perfect for an ultimate water fight,work great and get bigger and bigger. Super value large pack of 500,only 1% with punctures Each balloon is about 4.5 inches diameter as shown. Great for throwing. Colors will vary. Come with a Rimobul coaster